Compared to Golden Chest, it excludes the back side, so you won't know what was added, but in a faster environment, 4 turns is very slow, and unlike over there, if it remains on the front side and is removed, it will misfire, so maintaining it is difficult
I play Crucible and Loam with Exploration and several other extra land effects, so this is a way to draw a bunch more cards late game
I mean you don't exactly get much that's worthwhile out of them
Once enabled, you get to watch the chaos as your opponents try to gauge whether they can afford to cast spells into your enchantment
The fact that you net a 3/5 is fine, and with deathtouch and a high defense, you can play control and keep away creatures that fear death